-- ^Turns a plain memory reference into a foreign object by associating
-- a finalizer - given by the monadic operation - with the reference.
-- The finalizer will be executed after the last reference to the
--- foreign object is dropped. Note that there is no guarantee on how
--- soon the finalizer is executed after the last reference was dropped;
--- this depends on the details of the Haskell storage manager. The only
--- guarantee is that the finalizer runs before the program terminates.
+-- foreign object is dropped. There is no guarantee of promptness, and
+-- in fact there is no guarantee that the finalizer will eventually
+-- run at all.
newForeignPtr = GHC.ForeignPtr.newConcForeignPtr
addForeignPtrFinalizer :: ForeignPtr a -> IO () -> IO ()
#ifndef __NHC__
newForeignPtr :: FinalizerPtr a -> Ptr a -> IO (ForeignPtr a)
-- ^Turns a plain memory reference into a foreign pointer, and
--- associates a finaliser with the reference. The finaliser will be executed
--- after the last reference to the foreign object is dropped. Note that there
--- is no guarantee on how soon the finaliser is executed after the last
--- reference was dropped; this depends on the details of the Haskell storage
--- manager. Indeed, there is no guarantee that the finalizer is executed at
--- all; a program may exit with finalizers outstanding. (This is true
--- of GHC, other implementations may give stronger guarantees).
+-- associates a finaliser with the reference. The finaliser will be
+-- executed after the last reference to the foreign object is dropped.
+-- There is no guarantee of promptness, however the finalizer will be
+-- executed before the program exits.
newForeignPtr finalizer p
= do fObj <- newForeignPtr_ p
addForeignPtrFinalizer finalizer fObj